IP Library › Granted Patent US 12,585,090
Granted Patent B2
US 12,585,090 · App. 19/010,019 · Granted Mar 24, 2026

Low total track length lens assembly including seven lenses of +−+−++− refractive powers for large sensor format

Inventors: Roy Rudnick (Tel Aviv, IL); Michael Dror (Tel Aviv, IL); Ephraim Goldenberg (Tel Aviv, IL)
Assignee: Corephotonics Ltd.
G02B13/0045G02B9/64
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Quick Facts
Patent No.
US 12,585,090
App. No.
19/010,019
Granted
Mar 24, 2026
Kind
B2
Abstract

Lens assemblies comprising from an object side to an image side, seven lens elements numbered L1-L7; an optical window; and an image sensor having a sensor diagonal length (SDL), wherein an exemplary lens assembly has a total track length TTL that includes the optical window an effective focal length EFL and a field of view (FOV), wherein TTL/EFL<1.100, wherein TTL/SDL<0.64, wherein FOV<90 degrees, wherein a normalized thickness standard deviation constant T_STD of at least four of the seven lens elements complies with T_STD<0.035, and wherein a focal length f 1 of lens element L1 fulfills f 1 /EFL<0.95.

Claims (23)

1 . A lens assembly comprising: from an object side to an image side,

seven lens elements numbered L1-L7;

an optical window; and

an image sensor having a sensor diagonal length SDL,

wherein the lens assembly has a total track length TTL, an effective focal length EFL, a field of view FOV<90 degrees and a f number f/#<1.9, wherein TTL/SDL<0.64, wherein lens element L1 is convex on the object side, wherein the seven lens elements are all made of plastic, and wherein a power sign sequence of the seven lens elements numbered L1-L7 is +−+−++−.

2 . The lens assembly of claim 1 , wherein TTL/EFL<1.100.

3 . The lens assembly of claim 1 , each lens element has a clear aperture CA, and wherein the CA of lens elements L3 or L4 is the smallest of all CAs in the lens assembly.

4 . The lens assembly of claim 1 , wherein f/#≤1.8.

5 . The lens assembly of claim 2 , wherein TTL/EFL<1.090.

6 . The lens assembly of claim 1 , wherein TTL/SDL<0.63.

7 . The lens assembly of claim 1 , wherein TTL/SDL<0.61.

8 . The lens assembly of claim 1 , wherein each lens element has a respective central thickness CT, and wherein the CT of at least 6 of the 7 lens elements complies CT/TTL<0.07.

9 . The lens assembly of claim 1 , wherein a focal length f 1 of lens element L1 fulfills f 1 <EFL.

10 . The lens assembly of claim 9 , wherein f 1 /EFL<0.85.

11 . The lens assembly of claim 1 , wherein a focal length f 5 of lens element L5 fulfills |f 5 /EFL|>4.0.

12 . The lens assembly of claim 1 , wherein a focal length f 5 of lens element L5 fulfills |f 5 /EFL|>6.0.

13 . The lens assembly of claim 1 , wherein a focal length f 5 of lens element L5 fulfills |f 5 /EFL|>8.0.

14 . The lens assembly of claim 1 , wherein a focal length f 6 of lens element L6 fulfills f 6 /EFL|>15.0.

15 . The lens assembly of claim 1 , wherein a focal length f 6 of lens element L6 fulfills f 6 /EFL|>30.0.

16 . The lens assembly of claim 1 , wherein a focal length f 6 of lens element L6 fulfills f 6 /EFL|>45.0.

17 . The lens assembly of claim 1 , wherein SDL=12 mm and wherein FOV<85 degrees.

18 . The lens assembly of claim 1 , wherein SDL=12 mm and wherein FOV<83 degrees.

19 . The lens assembly of claim 1 , wherein the lens assembly is included in a smartphone.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 5, 2025
From: RUDNICK, ROY; DROR, MICHAEL; GOLDENBERG, EPHRAIM
To: COREPHOTONICS LTD.
Reel/Frame 069748/0051 →
Continuity (5)
Continuation 18645450 · Apr 25, 2024
Continuation 18314936 · May 10, 2023
Continuation 17261110
Provisional Application 62889633 · Aug 21, 2019
Related Publication 20250130405A1 · Apr 24, 2025
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